WWII shelter survival photos and data summary. For a discussion of the taboo nature of these hard civil defense facts today, which allows suffering in war to continue without any reason except political elitist dogmatism, please see:
Lord Baker's remarkable book, Enterprise Versus Bureaucracy: The Development of Structural Air Raid Precautions during the Second World War, 1978, gives the survival statistics for simple indoor table type Morrison shelters on page 61: for Type A damage or complete demolishing by blast ("houses completely demolished") only 3 people out of 119 occupants were killed (hence the figure of 97.5% survival under strong tables). For type B and C damage ("houses damaged beyond repair" and "houses damaged so as to be uninhabitable") 0% were killed. Lord Baker shows that a wooden version of the Morrison shelter was proof tested successfully with 1 inch thick planks and joists to resist a collapsing house, finished with a coat of fire proof paint ...